
Dr Sophia Zadelis
MBBS, FRANZCR
Dr Sophia Zadelis is a radiologist who has subspecialised in breast imaging and diagnostic breast assessment. On completing her radiology training, Dr Zadelis did a Breast Imaging Fellowship and has worked solely in breast imaging, screening and diagnostic services since.
Before co-founding the Australian Breast Centre, Dr Zadelis was a radiologist at Central and Eastern BreastScreen. During her tenure, she was involved in screen reading, assessment and biopsy clinics, radiologist reviews and case reviews. She was also responsible for clinical, imaging and pathology correlation by liaising with an experienced multidisciplinary team.
Dr Zadelis has worked in busy diagnostic breast services assessing symptomatic patients for over a decade. Her expertise lies in reporting mammography, performing/interpreting breast ultrasounds, discussing clinical findings with surgeons, and lesion biopsies (fine needle, core, and vacuum-assisted biopsy) under ultrasound and mammography or clinical guidance. In addition, she is an expert at correlating all information with the pathologist and clinician to reach a conclusion regarding further management and to exclude/diagnose breast cancer. More recently, Dr Zadelis has been gaining experience in understanding the value, benefit and use of breast MRIs for certain cases.
Breast imaging/assessment aims to exclude/diagnose breast cancer as early, quickly and least traumatically as possible and explain symptomatology. A compassionate expert, Dr Zadelis recognises that breast assessment is a very stressful and emotive experience for women. Therefore, she always aims to minimise this stress as much as possible while reaching an accurate diagnosis using appropriate tests and avoiding unnecessary procedures.
Dr Zadelis regularly speaks at breast imaging and multidisciplinary breast cancer meetings and runs breast ultrasound workshops to upskill others.


A/Professor Lourens Bester
A/Professor Lourens Bester is currently the Head of Radiology in the School of Medicine Sydney campus at the University Notre Dame and Network Director of Training for Local Area Network 2 (LAN2), including Westmead Hospital, Royal Prince Alfred Hospital, Concord Hospital and Blacktown Mt Druitt Hospitals.
Prior to this, A/Professor Bester was a skilled and respected Interventional Radiologist with 23 years of experience across a broad spectrum of radiological procedures. He has a particular interest in interventional oncology and arteriovenous malformations
A/Professor Lourens Bester became an Honorary Interventional Radiologist at St Vincent’s Public Hospital and Royal Prince Alfred Hospital after he retired two years ago. He is still active as an Honorary IR and in an advisory capacity at St Vincent’s Public Hospital and Royal Prince Alfred Hospital.
Notable career achievements and positions held include:
- Service Director for Medical Imaging and Nuclear Medicine St Vincent’s Public Hospital, Sydney
- Head of Interventional Radiology St. Vincent’s Hospital Sydney
- Author of 36 publications in peer-reviewed journals on Interventional Oncology, including an M.Med. Thesis on Radiographic Contrast Medium Reactions.
- A/Professor Bester is a fellow of the Royal Australian and New Zealand College of Radiologists and has served on the CPD Committee 2015/2016, branch chair for NSW and the Faculty Council of Radiology 2014 to 2016
- Currently a member of the Principles and Rules Committee for Medicare review
- RANZCR representative to the Royal Australian College of Surgeons Audit of Surgical Mortality Committee
- Past Vice Chancellor of the Australian College of Phlebology, which bestowed its Award of Excellence on him in 2007


Dr Barnabas Bako
MBBS, FRANZCR
Dr Barnabas Bako has extensive expertise in interventional and vascular radiology, having two Fellowships in Interventional Radiology, one at Monash Medical Centre, Victoria and the other with The Canberra Hospital, ACT. In addition, he has been a Visiting Medical Officer at Central and Eastern Breast Screen and VMO Interventional Radiologist at Canberra Hospital.
Dr Bako has comprehensive general experience and takes a special interest in dental radiology. He has Level 2 certification in CT Coronary Cardiology and has been a Member of the North American Society of Cardiac Imaging since 2004.
Dr Bako is responsible for Vision XRAY Group’s intervention protocol and is often called upon to do the impossible in relation to interventional procedures. He has presented at the Annual Vascular Meeting for the Society of Vascular Surgeons for many years.


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